Tierrasanta, San Diego, Furnace Repair
Schedule a Same-Day Furnace Repair in Tierrasanta
A chilly night in Tierrasanta feels even colder when you don’t have a working furnace. Guthrie & Sons provides quick furnace repairs in Tierrasanta, San Diego, to get your home back to normal as soon as possible. Need an emergency furnace repair? We have some of the best technicians in Southern California ready to help!
Guthrie & Sons Will Get The Heat Back On in Your Tierrasanta Home
Is your furnace not turning on? Blowing cold air? Shutting off after a few minutes? When something’s wrong, you need to know what’s causing it, whether it’s safe to keep running, and how soon it can be fixed.
Guthrie & Sons Heating, Air & Solar has been fixing furnaces in Tierrasanta, San Diego, California, since 2005. Our licensed, NATE-certified technicians are true experts who service all makes and models of gas and electric furnaces. We’ll respond quickly, explain everything clearly, and never push you into work that you don’t need. Same-day furnace repairs are available! Call or message to schedule your Tierrasanta furnace repair.
Need a Furnace Repair Near Me? Choose the Best Furnace Repair in Tierrasanta
Many homes in Tierrasanta were built in the late 1960s and 1970s, with others remodeled or expanded over time. Some still rely on older, retrofitted furnaces, while others use newer systems. No matter how old your furnace is, problems can happen.
Nighttime temperatures in the 40s keep your heating system busy, and if maintenance has been skipped, that extra run time can cause your furnace to reach a breaking point. Thankfully, you have a top furnace repair company in Tierrasanta that’s close by.
Whether you’re in Tierrasanta Norte, Villa Monserate, Villa Portofino, Villa Barbados, Belsera, or El Dorado Hills, Guthrie & Sons can get to you quickly. Call or message today to schedule your furnace repair in Tierrasanta.
Is It Better to Fix Your Furnace Or Is It Time to Replace It?
When a furnace breaks down, it’s easy to assume a replacement is the only option. In reality, many problems can be repaired, especially if the system still has good years left. The right choice depends on the age of the furnace, the type of failure, and the overall condition of the system. We take the time to explain what we find so you can make a decision that you feel comfortable with and confident in.
- If your furnace is under 10 years old, repairs are often worthwhile, especially when the issue involves parts like ignitors, sensors, switches, or control boards.
- Furnaces 10 to 12 years old may still be good candidates for repair if the problem is limited to a single component and the system has been well maintained.
- Damage to major components—such as the heat exchanger, blower assembly, or gas valve—can make replacement the smarter long-term option.
If your furnace is 15 years or older, struggles to heat evenly, or needs frequent repairs, a furnace replacement may be the better choice. We’ll go over available financing, rebates, and other savings opportunities that make this upgrade less stressful on your budget.
Furnace Repair Services That Get You Warm Again—Fast
The sooner you reach out for furnace repairs in Tierrasanta, the better the outcome usually is. Small issues tend to cause less damage, take less time to fix, and cost less overall. We know you just want the problem handled and the heat back on without dragging things out. Let us know what’s going on, and we’ll get there quickly, with same-day furnace repair in Tierrasanta whenever possible.
Furnace Not Turning On
You turn the thermostat up, wait… and nothing happens. No sound, no warm air, no sign the furnace is even trying. This is often tied to ignition failures, electrical issues, or safety switches preventing startup. We go through the system step by step to find where the process stops, then repair the part that’s keeping your furnace from coming on so heat can start flowing again.
Furnace Blowing Cold Air
At first, it feels like the furnace is working—air is coming out of the vents—but it never warms up. This usually means the system is running without properly heating the air, often due to ignition problems, airflow restrictions, or overheating that shuts the burners down. We check the full heating cycle and airflow to get warm air moving again instead of cold drafts.
Furnace Keeps Turning On and Off
Your furnace starts up, runs for a short time, then shuts off—over and over. This short cycling can make the house feel uneven and drives up wear on the system. The cause is often restricted airflow, failing sensors, or overheating. We find what’s triggering the shutdowns and fix it so the furnace can run steadily without constant stops.
Strange Noises Coming From the Furnace
A furnace should run quietly in the background, so new sounds are usually a warning sign. Banging, rattling, squealing, or buzzing can point to loose parts, worn motors, or airflow issues. We track down where the noise is coming from and fix it before a small issue turns into a full breakdown, if that hasn’t happened already.
Uneven Heating Throughout the House
Some rooms feel warm, others stay chilly, and you keep adjusting the thermostat trying to balance things out. Uneven heating is often tied to airflow problems, duct issues, or a blower that isn’t moving air effectively. We check how heat is being distributed and correct the issue so temperatures feel consistent throughout the house.
Pilot Light Keeps Going Out
You might notice the heat working one minute, then gone the next. Maybe you relight the pilot, it stays on for a bit, and then goes out again. Each time it happens, the house cools off and you’re left wondering if it’s safe to keep trying. A pilot light that won’t stay lit is often caused by a dirty pilot assembly, a worn thermocouple, or an issue with gas flow. We inspect the pilot system, fix what’s causing the flame to drop out, and make sure your furnace can run safely.
Protect Your Furnace Before More Problems Start
Furnaces usually give you plenty of warning before they fail—you just don’t always notice it. Efficiency drops, parts work harder, and small issues get pushed aside until the system finally gives out. A yearly furnace tune-up keeps things from reaching that point. During your furnace maintenance in Tierrasanta, we clean the system, check critical components, test safety features, and make sure your furnace is ready for the colder months ahead.
Our USA Membership Plan makes maintenance easier to keep up with. You’ll get reminders, priority scheduling, and discounts on repairs, so nothing slips through the cracks. It’s a really convenient, hassle-free way to extend the life of your furnace and avoid unexpected problems. You can learn more online or talk to our team about how to get year-round coverage for your heating and air conditioning.
Frequently Asked Questions
What is the most common problem of a furnace?
The most common furnace problems are related to ignition and airflow. Things like failed ignitors, dirty sensors, clogged filters, or worn components can stop the furnace from heating properly. These issues often start small but can lead to shutdowns if they aren’t addressed.
What is the most expensive repair on a furnace?
Replacing a cracked or failing heat exchanger is typically the most expensive furnace repair. The heat exchanger is responsible for safely transferring heat, and damage can create safety risks. Because of the cost and labor involved, replacement is often recommended instead of repair.
What is the average lifespan of a furnace?
Most furnaces last around 15 to 20 years, depending on usage, system quality, and maintenance. Regular tune-ups help reduce wear on components and keep the system running efficiently. Furnaces that aren’t maintained tend to fail earlier and need more repairs.
Is furnace repair covered by homeowners' insurance?
Homeowners’ insurance usually doesn’t cover furnace repairs caused by age, wear, or lack of maintenance. Coverage may apply if the damage is tied to a sudden, covered event, such as fire or storm damage. Reviewing your policy or checking with your insurer can clarify what’s included.
Heating and Cooling Offers You Can't Miss
Big savings, same great service. See what offers are available now in Carlsbad for our favorite customers.
- INSTALLATION
$625 Comfortably California Rebate
Valid on select systems. Valid on residential properties only. Can be combined with HEERHA rebates, $2,000 heat pump Federal Tax Credit and $600 electrical upgrade Federal Tax Credit. Rebate available until funds last. Restrictions apply. See dealer for details. Offer expires 3/31/26.
- INSTALLATION
0% APR for 24 Months
Get 0% APR financing for 24 months on a new heating or air conditioning installation. 0% interest with 24 equal monthly payments.
Financing subject to credit approval. Valid on select systems only. Valid on residential properties only. Cannot combine with other offers. Must mention promo at time of estimate appointment. Restrictions apply. See dealer for details. Offer valid for an estimate appointment scheduled before 3/31/26.
- REPAIR
Free Diagnostic w/ a Repair
Your diagnostic service call fee will be waived if you proceed with a repair.
Cannot combine with other offers. Restrictions apply. See dealer for details. Offer expires 3/31/26.
- WATER HEATER
Free Estimate on a New Heat Pump Water Heater Installation
Valid for an estimate for a new hybrid heat pump water heater installation or replacement.
Restrictions apply. See dealer for details. Offer expires 3/31/26.
Real Reviews From Real Customers
We do things differently, and our customers appreciate it. See what some of our thousands of satisfied customers have to say about working with us.


Please congratulate them for a job well done!





We worked with Vlad T., who had previously been out to our home and saved us tens of thousands of dollars by getting our existing AC unit up and running when other companies were pushing for a full replacement. That experience alone earned our trust.
Now that we’re finally ready to purchase new units, there was no question that Guthrie & Sons was the only company we would consider, and Vlad was the obvious choice. He was extremely professional, punctual, and exceptionally knowledgeable, taking the time to explain options clearly and thoroughly. His expertise and honesty made the entire process straightforward and stress-free.
If you’re looking for an HVAC company you can truly trust—one that values integrity, quality workmanship, and customer service—I cannot recommend Guthrie & Sons and Vlad T. highly enough. This is how service should be done.




I only wish the annual service was cheaper 🙂




Zach M. came by and installed on new one. He was extremely professional and completed the installation promptly.
This was another great experience all around and I gladly recommend Guthrie and Son's for all your HVAC needs.

From start to finish, their team was outstanding. They worked incredibly hard, treated our home with respect, and left everything spotless—truly the cleanest job site I’ve ever seen after a major project. The installation itself was seamless, and the quality of their work shows in every detail.
If you’re looking for a company that combines deep knowledge, excellent craftsmanship, and genuine care for their customers, Guthrie & Sons is it. Absolutely five stars across the board!


What really stood out was his problem-solving ability and willingness to go the extra mile to ensure everything was operating as it should. He communicated clearly throughout the process, kept us updated, and made sure we felt confident in the work being done.
It’s not often you come across someone who combines technical expertise with such a strong work ethic and positive attitude. We’re very grateful for his efforts and would highly recommend Kareen to anyone needing reliable HVAC service.

Vlad came out to provide an estimate and was able to size an HVAC system that worked well for my house.
They installed it quickly, without issue and helped me set up an app on my phone to control.
The system is working great to heat and cool my house and is whisper quiet.
Highly recommend going with Guthrie and Sons if you want a high quality experience for large and important purchases.

Guthrie & Sons Can Fix Your Furnace—Contact Us Today
If you know something’s wrong with your furnace—or even if you just suspect it—let us take a look. You shouldn’t have to drag out space heaters or bundle up inside your own home just to stay warm.
Our team focuses on fixing what can and should be fixed, and replacing systems only when that’s truly the better option. Either way, the goal is the same: get your heat working again. Call us or fill out our quick online form, and we’ll get back to you fast! For the furnace repair Tierrasanta, CA, trusts the most, choose Guthrie & Sons.
